442155065 has 8 divisors (see below), whose sum is σ = 578821248. Its totient is φ = 321567280.

The previous prime is 442155053. The next prime is 442155067. The reversal of 442155065 is 560551244.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-442155065 is a prime.

It is a super-2 number, since 2×442155065² = 391002203010308450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (442155067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4019537 + ... + 4019646.

It is an arithmetic number, because the mean of its divisors is an integer number (72352656).

Almost surely, 2^442155065 is an apocalyptic number.

It is an amenable number.

442155065 is a deficient number, since it is larger than the sum of its proper divisors (136666183).

442155065 is a wasteful number, since it uses less digits than its factorization.

442155065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8039199.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 442155065 is about 21027.4835631846. The cubic root of 442155065 is about 761.8302293761.

The spelling of 442155065 in words is "four hundred forty-two million, one hundred fifty-five thousand, sixty-five".